Improvement in clay-pulverizers



I UNITED STATES PATENT OFFICE,

IRA HERSEY AND JAMES H. VAN RIPER, OF NEV YORK, N. Y.

IMPROVEMENT IN CLAY-PULVERIZERS.

Specication forming part of Letters Patent No. 17,505, dated June 9,1857.

To all whom it may concern:

Be it known that we, IRA IIERSEY and JAMES H. VAN RTPER, both of thecity, county, and State of N ew York, have invented an Improved Machinefor Pulverizing Clay; and We do hereby declare that the following is afull, clear, and exact description of the conv struction and operationof the same, reference being had to the accompanying drawings, drawnupon a scale of one-eighth of an inch to the inch, and in Which- Figurel is a plan of the improved machine. Fig. 2 is a vertical longitudinalsection of the same with an elevation of the spiral beaters. Fig. 3 is avertical transverse section. Fig. l is a view of a single detachedbeater. Fig. 5 is another elevation and view of the beaters arrangedspirally.

parts in all the figures.

The nature of our invention consists in the construction of machines forpulverizing clay, in which a series of beaters M M, arranged spirallyupon a horizontal shaft C C, revolve upon the shaft in the interior of agrated cylinder or screen O O, which is supported on its exteriorperiphery and revolves in a direction opposite t0 the revolution of thebeaters.

To enable others skilled in the art to make and use our invention, weproceedV to describe its construction and operation, the materialpreferred for its construction being iron, chieiiy cast-iron.

A A (see drawings) are the two end frames securely bolted or atlixed toa solid foundation and supporting the boxes B B of the beater-shaft C Cand the boxes D D of the main shaft E E.

Upon the main shaft is one of a pair of grooved rollers F F, grooved inV-shaped grooves running around the rollers, the other grooved rollerbein g supported by boxes which receive the ends of the shaft upon whichit revolves.

G G are the side frames of the machine, secnrely bolted or fastened tothe end frames. To the side frames are atiixed the aprons I I, whichconduct the clay which falls from the screen to the grooved rollers.

The power is applied by a belt and drum to the main shaft E.

.I J is a pulley afxed to one end of the main shaft and is connected bya belt K K with the pulley L L, which is affixed to and turns thebeater-shaft C C.

M M M are movable beaters, consisting of a ring and a projection or armarranged in a spiral upon the shaft C C.

N N N are set-screws which hold the movable beaters in their places uponthe shaft G.

O O is the grated cylinder, screen, or separator, made in drums boltedtogether orin one whole casting.

P P are the ribs or gratings surrounding the cylinder or separator.

Q Q are the driving-wheels of the separator iirmly aflixed one `ateachend of the separator. It is seen that these driving-wheels aregrooved with a V-shaped groove in their The same letters representcorresponding peripheries, and that they rest upon correspondingdriving-wheels R R, atixed to the main shaft E E, from which theyreceive their motion, the Wheels R R having V-shaped projecting rimscorresponding with the grooves of the wheels Q Q- S S is a hopper-toreceive the clay or material to be pulverized before it enters themachine.

T T are V-shaped Scrapers affixed to the side frames, the teeth ofYwhich enter into and keep the grooves of the rollers F F clean andprevent the clay from packing. v

U U are bow-frames extending over the top of the machine and connectedfirmly with the side frames G G.

XV WV are longitudinal braces connecting the bow-frames, and upon theirends X X, passing through the bow-frames and serving as axles, are aixedand revolve the guide and friction rollers Y Y, which, being providedwith V-shaped rims, guide and support the driving-wheels Q Q of theseparator and keep them in their places.

Z Z is a delivery-chute affixed to the end frame A close to the end ofthe separator, from which it receives the stones and other materialswhich have not fallen through the gratings and have been expelled fromthe separator.

H H is an outer casing or cover of the machine.

Having thus described the several parts of the machine, we proceed todescribe its action Vbeaten mass of clay from the receiving to the Atthesamer expellingend of the cylinder. time the driving-Wheels R R, affixedto the main shaft, communicate motion to the driving-WheelsQ Q of theseparator by means of the friction of the V-shaped grooves andprojections of their respective rims, and thus the cylinder receives amotion of revolution in a direction contrary to the revolution of thebeaters. The beaters and separator, thus revolving, pulverize the clayand separate the stones and the clay as it is sufficiently pulverizedfalls through the gratings of the sepl arator or is driven through andis stopped and made to fall by the outer casing with which the machineis covered. The stones and other matters which do not pass through thegratings of the separator are moved along by the spiral arrangement ofthe beaters and are finally expelled at the delivery-chute Z Z. The clayWhich falls through the grating is guided bythe aprons I I between thegrooved rollers F F, which 4may be placed under the machine to grind andpulverize the clay still more finely. One of'the rollers F F receivesmotion from the main shaft E E, to which it is affixed. The other rollerrevolves freely upon its axis. fallen through the gratings of theseparator, (or when the grooved rollers are used from between thegrooved rollers,) is ready for use in the manufacture of bricks or tilesor for other purposes for which pulverized clay is used.

One of the advantages of this pulverizer is that the cylinder andbeater-shaft are horizontal, for as the spiral arrangement of thebeaters moves the material` along and expels The pulverized clay Whichhas thus found in supporting and driving the cylinder by means ofdriving-Wheels placed on the outside, by which arrangement all bracesand obstructions are removed from the interior of the cylinder.

Another advantage is that this pulverizer, in consequence of thecentrifugal motion imparted to the air, &c., acts as a rapid evaporatoror drier, thus admitting the use of Vclay in a damper or meister state.

It is to be observed that b y varying the pitch of the spiral (of thebeaters) the length of time which the pulverized material is kept in thecylinder and under the action of the beaters may be graduated, accordingto the necessity of the case or the willl of the operator, and thestriking-surfaces of the beaters may be made broader or narrower,according to the nature of the clay or material to be pulverized, andthe striking-surfaces may be vmade parallel With the axis of the spiralor inclined obliquely thereto at any angle.

It will be observed that as these beaters are made separate and Withrings to slip on the shaft() they may be changed, if desired, for othershaving differently-formed arms with great facility.

I-Iaving thus described the nature of our invention and construction andoperation of the same, What we claim, and desire to secure by LettersPatent, is

The combination of the grated cylinderv or lseparator O O, open at itsends and supported

